How come my WADManager and WADinstaller isnt working in my wii?

I have the homebrew channel and I got the WADManager v1.5 and v1.4 to load up, but with borth of them, when I pressed A, the whole wii freezes with my remote aswell. The WADinstaller just freezes when I load it up. Someone help me plz or give me another .wad installer app/program to install wads. I reaally want to play onslaught.